Humans in the Holocene

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Across
  1. 2. the other name for the Early Holocene
  2. 3. the other name for the Middle Holocene
  3. 5. the mountain range in Peru (2 words)
  4. 8. periods of less sunspot activity (2 words)
  5. 9. the other name for the Late Holocene
  6. 10. the valley in Pakistan where the Harappan civilization was
  7. 12. the Greek king who captured Egypt, Persia, and parts of India (3 words)
  8. 13. the period of cooler global temperatures that occurred around 1300-1850 (abbreviated)
Down
  1. 1. the mandate of ______ was the idea in ancient China that ideal climate conditions validated the authority of the ruler
  2. 4. an ________ period is a period between ice ages
  3. 5. the ______ empire ruled Mesopotamia when it collapsed
  4. 6. the first civilization, located between the Tigris and Euphrates rivers
  5. 7. the _______ ice sheet in Canada collapsed at the start of the Middle Holocene
  6. 11. the region spanning parts of Mexico and Central America